|
Specification:
Engine
Two options were available as standard:
a) 9.8 litre, 6-cylinder, 125 b.h.p.
at 1,800 r.p.m., torque 410 lb. ft. at 900 r.p.m.
b) 11.1 litre, 6-cylinder, 150 b.h.p. at 2,000 r.p.m.,
torque 450 lb. ft. at 1,100 r.p.m.
Alternative engines of up to 220 b.h.p. were also available.
Clutch
Large diameter, hydraulically operated.
Gearbox
6-speed, constant mesh, with overdrive on top gear.
Provision was made for a power take-off.
Ratios: 1st 6.63 to 1, 2nd 3.88 to 1, 3rd 2.43 to 1, 4th 1.55 to
1, 5th 1 to 1, 6th 0.71 to 1, reverse 5.66 to 1.
Alternative 6, 10, or 12-speed gearboxes were available.
Transmission
Open tubular prop-shafts with needle roller universal joints.
Front axle
Extra heavy duty ‘I’ section forged steel beam. Maximum
carrying capacity 5½ tons.
Rear axle
Several alternatives were used, depending upon the size
of the vehicle.
20 tons g.t.w. - 17" diameter, spiral bevel wheel and pinion,
ratio 6.14 to 1.
25 tons g.t.w. - 8½" centres, worm and wheel, ratio 7.25 to 1.
36 tons g.t.w. - double reduction, double helical, spiral bevel
wheel and pinion, ratio 7.01 to 1.
6 and 8 wheeled models:
25 tons g.t.w. - single axle drive, trailing rear axle (4 spring
bogie), 8½" centres, worm and wheel, ratio 7.25 to 1.
36 tons g.t.w. - double reduction, double helical gear and
spiral bevel, ratio 7.01 to 1, wheel and pinion.
Two axle drive:
45 tons g.t.w. - 8½" centres, worm and wheel on both axles,
ratio 7.25 to 1.
Steering
Available with left or right hand steering. Cam and
double roller, ratio 28.5 to 1.
Brakes
Bendix-Westinghouse dual air brake system, low pressure
warning buzzer incorporated. Multi-pull handbrake giving high
efficiency under full load, with air pressure assistance as an
optional extra.
Suspension
Exceptionally long 4" wide, semi-elliptic springs, 50
inches long at the front, 60 inches long at the rear.
Wheels and Tyres
Forward control:
4-wheeled models and 6-wheeled twin-steer models, 10.00 x 20
tyres on B7.0 wheels.
6-wheeled models (except tractor), front 10.00 x 20 tyres on
B7.0 wheels, rear 9.00 x 20 tyres on B6.S wheels.
8-wheeled models and 6-wheeled tractor, 9.00 x 20 tyres on B6.S
wheels.
Bonneted:
4 and 6-wheeled models, 10.00 x 20 tyres on B7.0 wheels.
Frame
Channel section, carbon manganese steel pressings, 12" deep x 3"
wide. 4-wheeled 8 ft. 9 inch and 17 ft. 9 inch wheelbase models
were fitted with 0.1875 inch thick side members. Frame thickness
on all other models was 0.312 inch. Front and rear facilities
were available as optional extras.
Electrical
24 volt lighting and starting equipment insulated return
with compensated voltage control. Batteries supplied in four 6
volt units, capacity being 102 ampere hours.
Fuel tank
Cylindrical welded steel tank, capacity50 gallons. Larger
capacities were available on request.
Cab
The cab assembly was in
two sections, split at a flat waist line. The top was easily
removable for maintenance etc. Fittings included a full-width
visor, twin air operated windscreen washers, electrically
operated wipers, twin interior lights, twin seats, fully
adjustable driving seat, and twin telescopic mirrors. Optional
extras included a large fresh air heating and ventilating unit,
external double skin roof, roof ventilator, and an interior sun
visor for the passenger. |
